stockfish: init at 6

pkgs/games/stockfish/default.nix

@@ -0,0 +1,32 @@
+{ stdenv, fetchurl, unzip }:
+stdenv.mkDerivation rec {
+  version = "6";
+  name = "stockfish-${version}";
+  src = fetchurl {
+    url = https://stockfish.s3.amazonaws.com/stockfish-6-src.zip;
+    sha256 = "a69a371d3f84338cefde4575669bd930d186b046a10fa5ab0f8d1aed6cb204c3";
+  };
+  buildPhase = ''
+  cd src
+  make build ARCH=x86-64
+  '';
+  buildInputs = [
+        stdenv
+        unzip
+  ];
+  enableParallelBuilding = true;
+  installPhase = ''
+  mkdir -p $out/bin
+  cp -pr stockfish $out/bin
+  '';
+  meta = with stdenv.lib; {
+    homepage = https://stockfishchess.org/;
+    description = "Strong open source chess engine";
+    longDescription = ''
+      Stockfish is one of the strongest chess engines in the world. It is also
+      much stronger than the best human chess grandmasters.
+      '';
+    maintainers = with maintainers; [ luispedro ];
+    license = licenses.gpl2;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -14294,6 +14294,8 @@ let
 
   stardust = callPackage ../games/stardust {};
 
+  stockfish = callPackage ../games/stockfish { };
+
   steamPackages = callPackage ../games/steam { };
   steam = steamPackages.steam-chrootenv.override {
     # DEPRECATED